Portable collapsible triangularly-shaped heat exchanger having upwardly-directed exhaust



FIG. 1 is a perspective view of a portable collapsible triangularly-shaped heat exchanger having upwardly-directed exhaust, embodying the design of the present invention

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof, the right side elevational view being a mirror image thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

We claim the ornamental design for a portable collapsible triangularly-shaped heat exchanger having upwardly-directed exhaust, as shown and described. 